Application of D7343 Phase-Locked Loop FM Stereo Decoding Circuit
The D7343 phase-locked loop stereo decoding circuit is similar to the D3361 internal circuit. The difference is that the D7343 uses a trigger to control the stereo switch to be turned on. When the composite signal is small, the flip-flop does not flip, and then becomes mono. This way is controlled. The signal-to-noise ratio of the stereo decoder of the switch is better than that of the same type of decoder. The S/N is greater than 74DB.D7343. Because the internal circuit adopts measures, the peripheral circuit does not need to separate and adjust the potentiometer, as long as the voltage and phase of the oscillation are controlled. Get the ideal resolution, the resolution is also 2~3DB higher than the similar decoder, D7343 input signal dynamic range is large, input
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